/Engine/Source/Runtime/Renderer/Public/MeshMaterialShader.h
FMeshMaterialShaderPermutationParameters ( EShaderPlatform InPlatform, const [FMaterialShaderParameters](API\Runtime\Engine\FMaterialShaderParameters) & InMaterialParameters, const [FVertexFactoryType](API\Runtime\RenderCore\FVertexFactoryType) * InVertexFactoryType, int32 InPermutationId, EShaderPermutationFlags InFlags )